baber/WOPTO huggingface dataset:
Patent GB-1004324-A (GB)
Title: Logic circuit
IPC: H03K19/10
Filed: 1962-10-18
Abstract: 1,004,324. Semi-conductor logic circuits. SPERRY RAND CORPORATION. Oct. 18, 1962 [Oct. 31, 1961], No. 39399/62. Heading H3T. In a NOR circuit comprising a tunnel diode connected to the secondary of a transformer and to a source of energy, the input to the transformer is gated to admit a predetermined input to the transformer primary which changes the state of the tunnel diode, and pulse means are provided to reset the diode. As shown in Fig. 1, a tunnel diode 116 is biased for bi-stable operation by a source 120 and is set to its high voltage state by a positive pulse, Fig. 2, from the reset clock source 118, giving a high level output. Application of a high level input to the anodes of one of the diodes 102, and a negative clock pulse from source 106 causes current to flow in the primary winding of transformer T 1 . A current is thus produced in the secondary, and since diode 114 is now reverse biased by the now negative state of the reset clock source 119 this current flows through the tunnel diode 116 and the potential source 126, switching the tunnel diode to its low voltage state, producing a low level output until the diode is reset by a subsequent reset clock pulse from source 118. The potential source 126 may be either D.C. or pulsed. In order to compensate for any capacitive current in the input diodes the transformer may include a compensating winding 108 connected to earth via a capacitor 110. The circuit may be modified for signals of opposite polarity by reversing the diodes, and the outputs may be taken from the opposite end of the winding, Fig. 5 (not shown). In a further modification, Fig. 7, outputs are taken from both ends of the winding 712, the two outputs having a phase difference between them due to the delay introduced by the inductance of the winding 712. The outputs are fed to a utility device 732 which may be a synchronizer to delay the earlier signals to coincide with the later, or alternatively it may be a pulse forming circuit, the first input signal triggering the device 732 and the latter one resetting it, producing a narrow output pulse.
Patent GB-1478702-A (GB)
Title: Vacuum interrupter
IPC: H01H33/664
Filed: 1974-09-10
Abstract: 1478702 Vacuum interrupters TOKYO SHIBAURA ELECTRIC CO Ltd 10 Sept 1974 [10 Sept 1973 13 March 1974 (2) 5 April 1974 28 May 1974 20 June 1974] 39475/74 Heading H1N A vacuum circuit breaker has a pair of plateform contacts 42, 42 connected to ends of respective current carrying rods 36A, 36B by connectors 40, 40 having first conductors 50, 50 extending substantially radially outwards, second arcuate conductors 54, 54 extending peripherally in the same direction and third conductors 56, 56 connecting the second conductors to the plate-form contacts, the contacts having slits 58 extending from the periphery towards the middle to reduce the strength of unwanted magnetic fields arising from eddy currents (which are prevented by the slots) and arc currents (which are guided towards the middle of the contact) so that a magnetic field stabilizing the arc is produced by the connector (essentially from each arcuate conductor 54 acting together as a single turn coil). A large variety of forms of slitted contact plate and connector constructions are described with respect to Figs. 2A and 3A to 25 (not shown). Rods 36A, 36B, connectors 40 and contact plates 42 are made of copper or copper alloy. Reinforcing members of low conductivity (e.g. stainless steel) may be provided between rod and contact 40 (Fig. 5, 15A, 15B to 19A, 19B not shown) and between adjacent arcuate portions of the connector (102 Figs. 24, 25).
Patent GB-1484607-A (GB)
Title: Follow-on cutting tool for use with a chad tape
IPC: B21D28/04
Filed: 1974-09-12
Abstract: 1484607 Punching SIEMENS AG 12 Sept 1974 [28 Sept 1973] 39913/74 Heading B3W A punching machine comprises a carrier 1 for a punch (not shown), a die 7 and a punch guide plate 6 through which also pass a pilot pin 2 with a tapered end 22 for fine positioning of a punched tape, located in guides 9 on the die 7, as it enters a hole in the tape and a triggering pin 3 which, if it fails to enter a monitoring aperture in the tape, is moved upwards against the action of a spring 11 and displaces a pin 4 which, via a limit switch, stops the machine. The pins are displaceable relative to the punch carrier 1 but the maximum amount by which they can project from the lower face of the guide plate 6 is constant and is determined by engagement of shoulders 23, 33 with shoulders on the plate so that regrinding of the pins, when the punch and die are reground and the initial clearance between the guide plate 6 and carrier 1 is correspondingly reduced, is not needed. To the same end, a pin 8 for lifting the tape after each punching stroke is adjustably mounted in the die 7 by means of lock nuts 13, 14.
Patent GB-1420688-A (GB)
Title: Apparatus for magnetically recording and/or reproducing electrical signals
IPC: G11B17/32
Filed: 1973-08-23
Abstract: 1420688 Magnetic disc assemblies SONY CORP 23 Aug 1973 [28 Aug 1972] 40030/73 Heading G5R A disc assembly in which a pliable magnetic disc 1 is supported by air films between plates 3, 17 has bores 18 through the conically-dished lower plate 17 over an annular area covering at least the track area of the disc 1, to prevent the formation of radial air pressure differentials caused by the contact of head 5a with the disc. The plate 17 has a central aperture 11 and rounded peripheries R, is mounted on resilient posts 20, and has a diameter less than that of the upper plate 3. The disc 1 is clamped to a flywheel 14 on a motor shaft 2<SP>1</SP>.
Patent GB-1114456-A (GB)
Title: Method of making ore briquettes
IPC: C22B1/24
Filed: 1965-09-21
Abstract: In briquetting specular hematite fines, they are heated under reducing conditions to raise their temperature into the range 850-1050 DEG  F. and effect a partial reduction of the hematite such that 15% to 30% by weight of the original oxygen content is removed and then there is mixed with the heated and part reduced fines sufficient low temperature bituminous coal fines, which are at ambient temperature or at the temperature resulting from washing and drying such coal fines, to produce a uniformly dispersed mixture containing 5% to 15% by weight of coal and having an apparent temperature as measured before the mixture reaches thermal equilibrium of 600-800 DEG  F., which mixture is formed into briquettes whilst at this temperature, the coal serving as a binder and being subsequently cooled, re-oxidation of the hematite being prevented.  The reducing step is preferably performed in a fluidized bed, the fluidizing gas being H2, CO, or mixtures thereof at a temperature of 900-1000 DEG  F.  A fluxing material may be included with the fines in a quantity sufficient to produce a self-fluxing briquette.  The briquettes may be cooled in a shaft by a stream of cool-reducing gas which is then used in heating and reducing the hematite. The preferred amount of partial reduction is 18-23% by weight.
Patent GB-870074-A (GB)
Title: Dust collecting head
Inventor: BROCHETTI RAYMOND EDWARD
IPC: E21B21/015
Filed: 1957-12-31
Abstract: 870,074. Percussive tools. MINE SAFETY APPLIANCES CO. Dec. 31, 1957, No. 40411/57. Class 124. A dust-collecting hood for a rock drill comprises a tubular nozzle joined to a tubular housing having an axial bore to receive a drill shank, one end of the bore having a particle inlet and also having a radial air and particle outlet, and the clearance between the tool shank and the bore being such that particles from the drill hole are comminuted therein and removed in the air stream. As shown, the head has a housing 4 provided with a radial nozzle 6, connected to a source of suction, and a flat resilient disc 18 to engage the surface being drilled. A bush 13 may be inserted in the housing 4 to accommodate different sizes of drills and the device may be supported on a drilling machine by an arm 7. Particles which fall between the bush and the drill steel are comminuted and carried by the air-stream through the nozzle.
Patent GB-1339215-A (GB)
Title: Testing devices for electrical components
IPC: H01H9/00
Filed: 1972-08-31
Abstract: 1339215 Testing switches SIEMENS AG 31 Aug 1972 [4 Sept 1971] 40504/72 Heading G1U [Also in Division H1] In order to test a switch S, Fig.4, of the type that comprises an indexed thumbwheel GNR carrying two spring contacts (shown crosshatched) which run over stationary printed contacts to connect sequentially a common contact with a plurality of individual contacts, a device G is positioned adjacent to the switch to cause, by means of a wheel Z, the switch to be advanced through its positions and at the same time the signals from the switch terminals are compared, by a comparator not shown, with signals derived by sensing the position of the wheel Z of the test device, and any lack of agreement is arranged to stop the motor driving the test device. In a modification Fig.2, (not shown) the test device (G) is arranged to be held in contact with the switch under test by magnets (HM 1 , HM 2 ), and the drive wheel, rather than having teeth, as in Fig.4, has a deep resilient surface layer (B) into which the projections from the switch thumbwheel can sink. The test wheel may be driven either step-by-step or continuously by an electric or clock-work motor.
Patent GB-1030094-A (GB)
Title: Signal selection and monitoring system
IPC: G05D1/00
Filed: 1964-10-05
Abstract: 1,030,094. Diode gating circuits. BENDIX CORPORATION. Oct. 5, 1964 [Oct. 7, 1963], No. 40532/64. Heading H3P. [Also in Divisions G1 and G3] In an ultra-reliable control system using redundant channels, a signal of intermediate magnitude is selected from signals in at least three parallel channels. Fig. 7 shows a gate comprising biased diodes capable of selecting the signal of intermediate magnitude from th signals of three parallel redundant channels fed to terminals-A, B, C. The gate comprises three conventional AND circuits 17, 18, 19 but used with signals of reverse polarity so that the more negative of each of these pairs of input signals is emitted at the output of each AND gate. These output signals are then applied to an OR gate 22 which is used with signals of reverse polarity so as to emit a signal equal to the most positive of the outputs from the AND gates, i.e. the intermediate value signal of the signals applied to terminals A, B, C. In Fig. 8 (not shown), the three pairs of diodes 17, 18, 19 are replaced by OR circuits and circuit 22 is replaced by an AND circuit. The invention is applicable to systems having control signals in the form of suppressedcarrier modulated voltages, modulated D.C. voltages, amplitude or width modulated pulses, binary modulated carriers or conventional digital data. Figs. 9, 10 (not shown), depict block diagrams showing fault indicators.
Patent GB-857364-A (GB)
Title: Appliance for pulling together the ends of conveyor belts which are to be joined to each other
IPC: F16G3/00
Filed: 1958-12-17
Abstract: 857,364. Belt fastening appliances. ZILLER, H. Dec. 17, 1958 [Jan. 3, 1958], No. 40671/58. Class 80 (1). An appliance for pulling together the ends of conveyer belts for joining comprises a pair of clamping rails 1, 2 provided at their ends with traction cables 8 acting through levers 7 and screw bolts 5 so that pull on the cables 8 clamps the rails on to the belt. One of the rails may have an open eye at one end to enable it to be readily disengaged from the respective bolt 5 and swung aside.
Patent GB-1145941-A (GB)
Title: Guide attachment for hoisting apparatus
IPC: B66C1/10
Filed: 1967-09-06
Abstract: 1,145,941. Lifting-cradles. SECATOL S.A. 6 Sept., 1967 [25 Nov., 1966], No. 40684/67. Heading B8H. A lifting-cradle for depositing loads in relatively inaccessible positions, such as between adjacent floors of a building, comprises an inverted U-shaped frame 2 with wheels 2 which is suspended by an arm 3 from a crane hook and supports a load hook 4. In use the cradle with the load suspended from the hook 4 is raised and moved towards the building until the wheels 2 rest on the floor on which the load is to be set down. Lowering of the cradle allows the wheels to run inwards carrying the load into the position illustrated in Fig. 2. A wheel 6 facilitates moving the cradle along the ground. The two parts 1, 3 may be folded together for ease of transport.
Patent GB-899212-A (GB)
Title: Measuring scale for machine tools and the like
IPC: G01B5/02
Filed: 1959-12-02
Abstract: 899,212. Indicating-apparatus; measure of length. HENSOLDT & SOHNE, OPTISCHE WERKE A.G., M. Dec. 2, 1959 [Dec. 27, 1958], No. 40885/59. Classes 106 (2) and 106 (4). The scale strokes 3 of a metal measuring- scale for a machine tool are constructed in relief by machining away the material between the strokes in such a way that the scale strokes show a rectangular profile with sharp edges and the depressions between the strokes are filled in with a material which has a magnetic permeability different from that of the metal of the scale body and is preferably capable of being blackened chemically or galvanically so that the scale can be scanned photo-electrically or magnetically. The scale can be formed by combining several portions 6, 7 with butt-joints 8 between scale strokes preferably at an angle thereto. The position of a scale stroke constructed in relief can be corrected by unilaterally reducing its width and so effectively moving the centre line 4 of the stroke.
Patent GB-1157669-A (GB)
Title: Process for Separating Substances from Granular Material
Inventor: BRANDES HEINRICH
IPC: B03B5/62
Filed: 1966-09-14
Abstract: 1,157,669. Wet separation. ERFURTER MALZEREI-UND SPEICHERBAU VEB. 14 Sept., 1966, No. 41002/66. Heading B2H. Floating substances are separated from a mixture of granular material and water by pumping the mixture through a pipe 12 into the bottom of a container 2, 3 so that it flows vertically to the top of the container, dividing the mixture by means of deflectors 6 into a number of streams 19 directed outwards from the middle of the container substantially horizontally towards an overflow rim 8 of the container at an increased speed relative to the vertical flow whereby the floating substances 18 flow over the rim and out of the container, passing the remainder of the mixture downwardly as shown at 16, bringing the streams together again and passing them as shown at 17 out of the bottom of the container. As shown, each deflector 6 comprises a lower portion, constituted by two flat triangular sides and one curved side formed by the cylindrical, .wait of the container and an upper portion 10 having in plan view two straight sides ,parallel to the upper edges of the triangular sides and an arcuate side of radius equal to that of the container. The surface 7 of each deflector is in the shape of a section of a cone and is positioned above the .rim 8 of the container. The container may alternatively leave a rectangular, or triangular cross-section.
Patent GB-1049599-A (GB)
Title: Calender stack
Inventor: MOORE LAWRENCE AUGUSTUS
IPC: D21G1/00
Filed: 1964-10-08
Abstract: 1,049,599. Calenders. BELOIT CORPORATION. Oct. 8, 1964, No. 41062/64. Heading D2A. A calender stack has a bottom roll journalled in bearing supports on a base, a series of calender rolls superposed upon the bottom roll and having bearing housings 17, each housing mounted at one end of a lift arm 19 pivoted at 20 to a post 11, there being fluid-pressure-operated means-e.g. a diaphragm which pivots a bell-crank lever 45 into engagement with arm 19-at the end of each arm remote from housing 17 operable to pivot the arm to relieve the calender roll pressures, and additional means-e.g. lift bar 40-guided for slidable movement along posts 11 to pivot arms 19 and lift the calender rolls successively out of engagement with each other from the top to the bottom of the stack. Each lift bar 40 is lowered by a screw jack arrangement 51-56 Fig. 1 (not shown) and has pins 49 to engage the arms 19. Each post 11 is of channel-section,the openings facing each other, and has oil and air lines therein.
Patent GB-1488287-A (GB)
Title: Anti-skid braking systems for tandem axle vehicles
IPC: B60T8/72
Filed: 1975-10-08
Abstract: 1488287 Anti-skid tandem axle braking system DANA CORP 8 Oct 1975 [17 March 1975] 41198/75 Heading F2F A tandem axle suspension with adjacent axles 15, 16 supported on each side by a pair of leaf springs interconnected by an equalizer beam 35 has a fluid pressure braking system comprising brake actuators 69 connected to a brake control valve 71 through a modulating valve and logic circuit assembly 72 responsive to at least one wheel speed sensor 73, 74 on each side on the rear wheels to modulate the braking on that side when a skid condition is detected. When single sensors are provided on each side they are on the rear axle and the torque arms 44 and 45 and equalizer beams 35 are preferably arranged to transfer axle load so that the front axle load is 5 to 10% greater than the rear axle load. A select low logic circuit is utilized for each side when sensors are provided at each wheel to control the braking on each side. The logic circuit for each side compares the rate of change of sensor wheel velocity with a reference maximum acceleration signal. The sensors may provide a pulsed or A.C. output.
Patent GB-1041889-A (GB)
Title: Rotational casting process and apparatus
IPC: B29C33/34
Filed: 1964-10-09
Abstract: 1,041,889. Rotational moulding process. ALLIED CHEMICAL CORPORATION. Oct. 9, 1964 [Oct. 10, 1963], No. 41392/64. Heading B5A. In a rotational moulding process, a mould is charged with moulding material and the mould rotated about two axes angularly disposed to one another, at rates of rotation at which the centrifugal force is less than the combined effects of viscosity and gravity, and the mould is simultaneously reciprocated, the reciprocation causing the material to be more widely distributed over the mould walls within a given time than would occur with the rotation alone. As shown, a mould 76 is mounted for rotation about an axis 56, 58 in a frame 54 mounted for rotation about axis 48, 50 and supported on a platform 24 having wheels 28 whereby it can move along a track 26. The platform and hence the mould is reciprocated by a motor 78 and rotation of the frame and mould effected by a motor 29. During moulding the frame is contained in an oven 94. The rate of rotation about the axis 48, 50 may be as much as four times the rate about axis 56, 58. In an example, the moulding material is a mixture of caprolactam, an anionic catalyst and a polymerization promotor, the mixture being polymerized during moulding to form an article of polycaprolactam.
Patent GB-851654-A (GB)
Title: Improvements in and relating to machines for the manufacture of slabs or tiles
IPC: B28B5/08
Filed: 1958-12-23
Abstract: 851,654. Rotary table compression-moulding machines. GIANNELLI, G. Dec. 23, 1958 [Dec. 28, 1957], No. 41413/58. Class 87(2). In a machine for the manufacture of tiles, or slabs, a die, movable relatively to a transfer structure, is mounted and centred thereon by means comprising two pins cooperating with contact profiles, at least one having a V-shaped recess, and means is provided to move the die relatively to said structure until each pin contacts a profile. A die-plate 24 is resiliently supported by a die frame 10 resiliently supported by springs 12 on a carriage structure 9 which carries rollers 8 slidable in guides 7 on a pair of arms 4. These arms are attached to a rotating table 3 and form a transfer structure which carries the die-plate beneath a press 2, Fig. 1, where a fluid-operated piston system 18 causes a stop 19 to urge the frame 10 and carriage 9 radially inwardly so that a pin 16 on each arm 4 is fully pressed into the V-shaped recess of each plate 15 on frame 10. After pressing, stop 19 is retracted and the arms moved round to an ejecting station, Fig. 4 (not shown) where the die is similarly centred. Each plate 24 has a vibrator 27 associated with it. The relative movement between the die and the structure may be effected via the resilient means supporting the die.
Patent GB-874995-A (GB)
Title: Improvements in or relating to transistor oscillators
Inventor: JONES ALFRED CONWAY
IPC: H02M7/5383
Filed: 1958-12-23
Abstract: 874,995. Transistor oscillator circuits. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Sept. 8, 1959 [Dec. 23, 1958], No. 41490/58. Class 40(6) A back-coupled type transistor oscillator has the back coupling circuit connected to the base in series with a unilaterally conductive device poled to be conductive for normal base current and arranged so that as the back coupling is reduced the resistance of the device increases. Thus, in the oscillator shown, the occurrence of an overload will reduce the current supplied to the bases through the back coupling circuit, increasing the resistance of rectifier 1 and causing oscillation to cease. A resistance capacitance circuit 12, 13 provides a starting bias impulse on switching on. The capacitor may be replaced by a relay contact opened by the generated oscillations or by a thermal switch operated by the oscillations (Fig. 4, not shown).
Patent GB-1128316-A (GB)
Title: A process for the graft polymerisation of textile fibre materials
Inventor: TEICHMANN RAINER
IPC: D06M14/00
Filed: 1967-09-12
Abstract: 1,128,316. Grafted textile fibres. FORSCHUNGSINSTITUT FUR TEXTILTECHNOLOGIE. 12 Sept., 1967, No. 41513/67. Heading C3G. Textile fibre materials are graft polymerized by a process in which the initiation of graft polymerization on fibres of a polymer with reducing properties is brought about, either after treatment of said fibres in an acidic medium or in an acidic medium, in the presence of a radical-polymerizable monomer by activated manganese dioxide, prepared by the reduction of KMnO 4 , by the oxidation of a divalent manganese compound or by the hydrolysis of a tetravalent manganese complex. In the examples, (1) polyamide-6 is reacted with KMnO 4  in an aqueous medium containing acrylonitrile, and then the medium is acidified to initiate polymerization, (2) viscose is treated with KMnO 4 , rinsed, treated with HNO 3 , squeezed out and exposed to ethyl acrylate vapour and (3) cotton is treated as in Example 2, except that the graft monomer is acrylonitrile.
Patent GB-925690-A (GB)
Title: Hatch cover constructions
IPC: B63B19/18
Filed: 1959-12-08
Abstract: 925,690. Hatch covers. G. STRANSKY. Dec. 8, 1959 [Dec. 8, 1958], No. 41642/59 Class 113. The top and bottom parts of Fig. 1 show the port and starboard sides of a hatch cover arrangement having two cover sections 3, 4 mounted for movement athwartship of the vessel, each section having near its inboard end rollers 8 which engage a track 2 provided on the outer side of the hatch coaming and rest on an extension at 5 of the track when the section is in its fully open position, the outer end of each section having legs 6 with wheels 7 engaging a track 60 on the deck, the cover sections and the coaming being provided with sealing members and the tracks 2 and 60 having openings into which the wheels 8 and 7 enter when the cover sections are in the closed position, thereby allowing the sealing members to engage to produce a liquid tight seal. Centre jack means 20 and outer jack means (not shown) are provided for lifting the cover sections to break the seal and to lift the wheels 8, 7 to the level of the tracks 2, 60 when it is desired to open the hatchway.